Addison berdae



(No Model.)

A. BERDAN. Gate.

No. 241,593. Patented May 17, 1881.

Min 861960.

N, Prrins. Phmo-Lflhngnpher. Walhinglnn. n. c.

UNITED STATES PATENT OFFICE.

ADDISON BEEDAN, OF TECUMSEH, MICHIGAN.

GATE.

SPECIFICATION formingpart of Letters Patent No. 241,593, dated May 17, 1881.

Application filed June 3, 1880. (No model.) i

To all whom it may concern:

Be it known that I, ADDISON BERDAN, of Tecumseh, in the county of Lenawee and State of Michigan, have invented certain new and useful Improvements in Gates; and I do here by declare the following to be a full, clear, and exact description of the invention, such as will enable othefs skilled in the art to which it appertains to make and use the same, reference being had to the accompanyingdrawings, and to letters of reference marked thereon, which form a part of this specification.

My invention relates to that class of gates that are operated from the vehicle or from horseback withoutdismountin g, an d the novelty consists in the construction and arrangement of parts, as will be more fully hereinafter set forth, and pointed out in the claim.

In carrying out the invention I employ an ordinary base with right-angled arms, one of which is supposed to run at right angles with the planeof the road, and upon which traverses the gate-supporting roll, and the other, being arranged parallel with the plane of the road, furnishes supportsfor standards which support a shaft carrying a friction-wheel, which operates in a longitudinal slot formed in the capbar of the gate, upon each end of which shaft are cranks adapted to be turned from either side of the obstruction without dismounting from carriage or animal.

I am aware that it is not new to have gates of this class operating on friction-rolls and impelled in either direction by cranks from either side; but in all such constructions known to me the operating connectionsare made with ropes, cords, wires,'or the like, which work over pulleys. weather seriously impairs the operative usefulness of the gates when such pulleys and ropes are employed; and to avoid these deleterious consequences I provide a gate which traverses a base-plate through a guide-post, and is supported below at one end upon a roller, and the weight of the other end of the gate is made to bear by gravity upon an operating friction-roll upon the operatic g-shaft. A friction-roll journaled in the upper part of the guide-post prevents the tilting of the gate when the same has passed so far in one direction that the median I have learned that exposure to the line is beyond the operating-roll. By this construction the weight of the gate from one extreme to the other bears with sufficient force upon the operating-roll to prevent slipping and insure the amount of friction necessary for the efficient manipulation of the gate. This construction is very simple, does away with all ropes and pulleys, is not liable to get out of order, and" utilizes gravity for its successful operation.

I am also aware that fixed or stationary rolls have been employed one directly above the other. But in devices of this kind, exposed to storm and sunshine, the expansion and contraction materially affect the useful operation of the gate. To avoid this and other deleterious results, I have avoided placing the rolls upon a vertical plane, but have so arranged them that the bearing in any position will be upon but two rolls at the same time, andthose rolls at such arranged positions relative to each other that the Weather will not affect their efficient operation.

It will be observed that the only stationary roll in my device is journaled in the guide-post A above the gate, and is only operative when the gate has passed a certain balancing-line, which is not beneath the said stationary roll.

In the accompanying drawings, Figure 1 is a perspective view of my invention with the lower gate-roll and operating-roll supporting the gate, and Fig. 2 an end elevation, showing the operating-roll and guide-post roll supporting it.

Referring to the drawings, A represents the base-plate; A the guide-post, having at its upper portion journaled the shaft of a frictionpulley, B, and between the vertical sides of which traverses the gate 0, carrying-roller c, which traverses the base-plate A. The upper or cap rail, 0, of the gate 0 is formed with a longitudinal slot which receives the operatin groll D, mounted rigidly upon a shaft, D,having at each end a crank, D This shaft D is journaled or supported in standards E, as shown.

From the foregoing description the operation and advantages of the invention are obvious.

What I claim is In a gate, substantially as described, the

combination of the base A, guide-posts A, and crankstandards E with the shaft D, frictionroller D, and cranks D the recess 0 in the gate 0, the stationary upper roller, B, and trav- 5 ersing-roller c, the Whole constructed, adapted,

and arranged in such a manner that the gravity of the gate will at all times afford sufficient frictional contact between the roll D and the gate, and that the friction will change from the 10 traversing-roll 0 to the upper roll, B, and vice versa, as the gate is passed, with its greatest weight upon either side of the roll D, as shown and set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 8th day of 15 April, 1880.

ADDISON BERDAN. Witnesses:

ALFRED LEWIs, TILL LEWIS. 

